<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<div id="app">
<form action="" style="margin: 20px;">
<p @click="tag" :style="{ w,height: h, backgroundColor: bgc }"></p>
<input type="button" value="红" @click="tag($event,'red')">
<input type="button" value="黄" @click="tag($event,'yellow')">
<input type="button" value="蓝" @click="tag($event,'blue')">
</form>
</div>
</body>
<script src="js/vue.js"></script>
<script>
new Vue({
el:'#app',
data:{
h: '200px',
w: '200px',
bgc: 'red'
},
methods:{
tag (a,b) {
this.bgc = b
}
}
})
</script>
</html>
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<div id="app">
<form action="#" style="margin: 20px;">
<p @click="tag" :style="{ w,height: h, backgroundColor: bgc}"></p>
</form>
</div>
</body>
<script src="js/vue.js"></script>
<script>
let num = 0;
new Vue({
el:'#app',
data:{
h: '200px',
w: '200px',
bgc: 'yellow'
},
methods:{
tag () {
num += 1;
if (num==1){
this.bgc = 'pink'
}else {if (num==2){
this.bgc = 'green'
}else {
this.bgc = 'cyan';
num = 0
}}
}
}
})
</script>
</html>